Sd Noname 257 Reservoir Report
Nearby: Sd Noname 253 Sd Noname 258
Last Updated: December 5, 2025
Sd Noname 257, located in Haakon, South Dakota, is a private earth dam built in 1960 with a height of 26 feet and a storage capacity of 80 acre-feet.
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Summary
This dam on the TR-Cheyenne River is regulated by the South Dakota Department of Environment and Natural Resources, ensuring proper inspection, permitting, and enforcement. While its hazard potential is rated as low and its condition is currently not assessed, Sd Noname 257 plays a crucial role in water resource management in the region.
Managed by the Natural Resources Conservation Service, Sd Noname 257 serves as a vital structure for flood control, irrigation, and water supply purposes. With a maximum discharge capacity of 1000 cubic feet per second, this dam contributes to the overall water management system in the St. Paul District. Despite its remote location and lack of associated structures, Sd Noname 257 remains a significant asset for the local community and the environment.
As climate change continues to impact water resources, the role of dams like Sd Noname 257 becomes increasingly important in ensuring water security and resilience. By monitoring its condition, conducting regular inspections, and implementing risk management measures, this dam can continue to fulfill its purpose effectively while adapting to the changing climate dynamics. As stakeholders work together to address the challenges posed by climate change, Sd Noname 257 stands as a testament to the critical role of water infrastructure in building sustainable and climate-resilient communities.
Year Completed |
1960 |
Dam Length |
100 |
Dam Height |
26 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
80 |
Hazard Potential |
Low |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Sd Noname 257